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introduction：Abstract：The mechanism of spheroidizing agent and spheroidizing element was discussed in this paper，The principle of composition allocation of spheroidizing agent was put forward，And combined with years of reality，The key points of quality control of nodulator in alloy production enterprises are emphasized，The evaluation index of nodulating agent quality was explained，How to select spheroidizing agent is described、And casting defects caused by improper selection，At the same time, the comprehensive measures of stabilizing spheroidization are also proposed。 Ductile iron is now produced in almost all iron mills，As an indispensable nodulator for the production of nodular cast iron, more and more attention has been paid。What kind of spheroidizing agent should be selected for different production conditions，Or what
2015-01-04 Reading quantity 2807
introduction：Driving pump、blower、Compressors and other mechanical steam turbines or power generation steam turbines closely related to industrial production processes。Industrial steam turbines can use either fuel or steam produced in boilers by by-product heat in various industrial production processes，Residual steam from the production process can also be used。Industrial steam turbines are widely used in modern industrial enterprises，The main reason is that：①At all requires both power and heat，Or in various production processes that have by-products of heat energy，Rational configuration of industrial steam turbines，Can improve energy efficiency，To achieve the purpose of energy saving。②Industrial steam turbines have a higher speed and a larger power range，Speed up to2
2015-01-04 Reading quantity 2808
introduction： The clutch tells you what to pay attention to when the car is in gear？ one、 Straight road without bends,Downhill followed by uphill,If the slope up is not very steep,Its usually driven up by inertia,Stay out of gear。If its a long slope,When you go down the hill, you have to get into gear when you go up the hill,Dont wait for too much inertia to burn before moving into gear,So long slope,A steep hill is usually in fourth gear,You cant get into fifth without moving into fourth,And its bad for the engine。But be careful not to get into gear too early,Because if its going fast,This time in gear due to engine braking force,Itll give the car a hard time
2015-01-04 Reading quantity 2930
introduction：one．SMTBasic process structure Screen printing（Or dispense）-->mount-->（solidify）-->Reflow welding-->cleanse-->Detection-->&nbs
2015-01-04 Reading quantity 2919
introduction：TIMKENbearing[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is a part that holds and reduces the friction coefficient of load during mechanical transmission。Can also be said，When other parts move relative to each other on the shaft，A device used to reduce the coefficient of friction during power transmission and to keep the center of the shaft fixed。]Failure during operation is a frequent occurrence，So dont be surprised。Out of order，Judgment and handling is key。 1、High bearing temperature：While the machine is running，InstallTIMKENThe bearing part is allowed to have a certain temperature，When you touch with your hand
2015-01-04 Reading quantity 1508
introduction： bearing[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is a part that holds and reduces the friction coefficient of load during mechanical transmission。Can also be said，When other parts move relative to each other on the shaft，A device used to reduce the coefficient of friction during power transmission and to keep the center of the shaft fixed。]One revolution、Raceway surface of inner ring and outer ring，Due to the rolling contact with the rolling element，Therefore, the trajectory is dark，The running track attached to the raceway surface is not abnormal，The load conditions are thus known，So when you remove the bearing，Please pay close attention and observe the running track of the raceway surface
2015-01-04 Reading quantity 1585
introduction：Be used forIKOImported bearing[Imported bearing:Simply put, the import bearing agent refers to the sale of an imported bearing brand。The main brands of imported bearings arenskbearing，ikobearing，fagbearing，Of good quality，Of course, the price is not cheap。]The grease inside must have anti-rust effect，Rust inhibitor preferably insoluble in water。Grease should have good adhesion，And can form an oil film on the surface of the steel，Grease softens during machining，Lead to leakage。Normal running time，Oil will be produced byIKOImported bearing[Imported bearing:Simply put, the import bearing agent refers to the sales of an imported bearing brand
2015-01-04 Reading quantity 1569
introduction： Tapered roller bearings[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is a part that holds and reduces the friction coefficient of load during mechanical transmission。Can also be said，When other parts move relative to each other on the shaft，A device used to reduce the coefficient of friction during power transmission and to keep the center of the shaft fixed。]Part working surface and core in condition、Structural and performance requirements are quite different，The overall heat treatment is often not taken into account，The potential of materials is also underutilized。Application of material surface strengthening technology is not only
2015-01-04 Reading quantity 1534
introduction： IKOThe use of bearings on machine tools is mainly used in the following three parts：Principal axis、Ball screw and general drive shaft。 Principal axisIKObearing[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is a part that holds and reduces the friction coefficient of load during mechanical transmission。Can also be said，When other parts move relative to each other on the shaft，A device used to reduce the coefficient of friction during power transmission and to keep the center of the shaft fixed。]As the basic parts of the machine tool，Its performance directly affects the speed of the machine tool、Turning accuracy、rigidity、Anti-flutter vibration cutting
2015-01-04 Reading quantity 1499
introduction： The unit of measurement for calculating the theoretical weight of steel is kg（kg）。Its basic formula is： W（weight，kg）=F（Sectional areamm2）×L（Length，m）×ρ（density，g/cm3）×1/1000The density of steel is：7.85g/cm3 The theoretical weight calculation formula of various steels is as follows： name（unit）Calculation formula Symbolic meaning Calculation example round steel wire rod （kg/m）W=0.006165×d×dd=diametermmdiameter100mmRound steel of，quadraturemweight。everymweight=0.006165×10
2015-01-04 Reading quantity 2955
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